#Oracle® Fusion Middleware System Requirements and Specifications
https://docs.oracle.com/en/middleware/lifecycle/12.2.1.3/sysrs/unix-operating-system-requirements.html#GUID-880D655D-F9FB-439B-8001-10AA78D0FC57
#1- Viewing the Number of Currently Open Files
/usr/sbin/lsof | wc -l
#2- Setting the Operating System Open File and Processes Limit
vi /etc/security/limits.conf
Add the following lines to the limits.conf file.
* soft nofile 4096
* hard nofile 65536
* soft nproc 2047
* hard nproc 16384
Reboot the host computer.
# 3- Minimum Requirements for the Linux Operating System
# Oracle Linux 7 (UL0+) and Red Hat Linux 7 (UL0+)
Oracle Linux 7 (UL0+) and Red Hat Linux 7 (UL0+)
binutils-2.23.52.0.1
compat-libcap1-1.10
compat-libstdc++-33-3.2.3.x86_64
compat-libstdc++-33-3.2.3.i686
gcc-4.8.2
gcc-c++-4.8.2
glibc-2.17.x86_64
glibc-2.17.i686
glibc-devel-2.17.x86_64
libaio-0.3.109.x86_64
libaio-devel-0.3.109.x86_64
libgcc-4.8.2.x86_64
libgcc-4.8.2.i686
libstdc++-4.8.2.x86_64
libstdc++-4.8.2.i686
libstdc++-devel-4.8.2.x86_64
ksh
make-3.82
sysstat-10.1.5
numactl-2.0.9 for x86_641
numactl-devel-2.0.9 for x86_642
motif-2.3.4-7 for x86_643
motif-devel-2.3.4-7 for x86_644
redhat-lsb-4.1-27.0.1.el7 for x86_64
redhat-lsb-core-4.1-27.0.1.el7 for x86_64
-- you cand add yum install ocfs2-tools -y fot another oracle document